When you're carrying a baby and you drop it.

when someone almost commits a party foul

When you poop standing up and it falls down your pant leg on the floor like a loose football.

When one guy is talking by himself to group of ladies larger then 3. While he is spittin game you yell "Fumble!" and tackle the dude.

When you're having intercourse and you realize youre about to ejaculate. You dont want to be done now so you "fumble" or stop right before ejaculation. Then its like starting over and you get twice the amount of sex.

Certain people trying to acquire a certain person who is available, or scoop them up. They wait until a breakup or until they are available, and then run in and try to scoop it real quick"

when you drop something